Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Your child grows a green thumb and flowers with this seed planting activity that also celebrates the 100th day of school!

Help your second grade scientist explore the timely topic of wind speed using a version of the classic Beaufort Scale.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

Use sticks and stones to create create an outdoor version of tic-tac-toe!

Help your child create a written message and practice their letters using sticks they find in nature. Here's how to get started.

This easy at-home experiment is a great way to "see" science.

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

First graders are learning to think like scientists. What better place to start, then by raising tadpoles? This hands-on activity explores science in action!

In first grade, children are introduced to fractions. Here's a recipe that combines fraction practice with winter fun and lets kids actually paint the snow!

This tactile activity helps kindergarteners learn about texture.

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Help your kindergarten scientist explore an important part of earth science: how soil retains water.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!